12: kd> !devstack ffffc88f56a47d70
!DevObj !DrvObj !DevExt ObjectName
ffffc88f56a4ae00 \Driver\ksthunk ffffc88f56a4af50 InfoMask field not found for _OBJECT_HEADER at ffffc88f56a4add0
ffffc88f57377060 Unable to load image \SystemRoot\system32\drivers\AtihdWT6.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for AtihdWT6.sys
\Driver\AtiHDAudioServiceffffc88f573771b0 InfoMask field not found for _OBJECT_HEADER at ffffc88f57377030
> ffffc88f56a47d70 \Driver\HDAudBus ffffc88f56a56f60 Cannot read info offset from nt!ObpInfoMaskToOffset
!DevNode ffffc88f56a4bc30 :
DeviceInst is "HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1008\7&2e5579fb&0&0001"
ServiceName is "AtiHDAudioService"
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